Fill out the form to download

Required field
Required field
Not a valid email address
Required field

Documentation

When do I need a Nonlinear Static Analysis?

Question

SimScale provides the capabilities to consider nonlinear behaviour in your structural analysis but when is nonlinear analysis necessary?

Solution

A nonlinear static analysis is required for any static application in which the stiffness of the entire structure changes during the loading scenario. The simulation must be solved incrementally to account for the stiffness changes.

There are three situations in which the stiffness of a structure changes,

  1. The deformation of the structure is so large that equilibrium must be considered at the deformed position rather than the original position.
  2. The material’s mechanical properties change during loading, in other words the internal stress does not remain directly proportional to the internal strain caused by the external load. This is the case for materials that display plastic or hyper-elastic behaviour.
  3. Changes in physical contacts allow stress transfer between structural components.

Important Information

If none of the above suggestions did solve your problem, then please post the issue on our forum or contact us.

Last updated: March 31st, 2020

Contents
Data Privacy